1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c5bb5354ba3972bb1aa9527e58e70edb1a9910b4a1b1c76f8c818e67ee9144. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/244080d2-73c1-48e5-96b4-2084e5d7c556.json and https://artists.proofprofile.net/proofs/artist/244080d2-73c1-48e5-96b4-2084e5d7c556.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad97dd77d0832effc357e226c5fd49ae0f57ee0fdd3e23f7fb863ef1b084cf8. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAC031800912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6cc5ae34573ab9a94d3c219dc8002f52c11fba65f6601a99e4196ea81c9645. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAC031800913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d9f6a791ee6da2150579fa2dd0e68f52eb62d308f6c6c99b956445f0f4a98d. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAC031800914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31afde269b94b66a8015fa7e715015cfdccc54ec5a898f0bfa1fc72ac78af6d4. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:25:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAC031800916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073a110ff23ff58ae1f172585c343d90f9078dfd343db48751245a7303f366b9. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAC031800918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396b2c0e925b96e0bf5656e514df5d809e216756592c6cda7b0e46a1e72b9fdf. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAC031800919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba29bd47df2bb59c63b6cc7b94290a8b9c8df50652e7bae4a6530235197e1a2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAC031800921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfd35d72ec96cbc222b50b43c107733025367470d32c3abec7f98a1ede53699. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAC032307587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b426782eb8f7f5d9171fa70b2a6f3ac066989e7997dab302d2e610ef6dbdcb. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAC032307588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758c44e3605c6a8ce8896b5dae21a199b75691350dff0f0ef483ac138010e0c7. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAC032307589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a948d66daac043e3f5bccf2a1d83244d536dd7e0e9bf9aef4c3aaf929084811. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAC032307590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf9e2c226770c1067b39fc55f817be9d95af34291e3b1efcab0fb503700af18. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020400072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6eaab6ac50a9dbe5f63a4b95096ec3d0f6d31d3fe45063774c3afd477fcd675. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020400074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f441c9ff7ed339cb53511849d4d8a59d2376fb859dccd7b66086243bf8f8e0e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020400075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c35430388b821e946b5e5f25338eae4bcfc7d90558a133e4568c0f34acc9ec. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779529475174f2c53d25c5062fee27944e04a7ccb2575173167f0c47f896f84a. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:21:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b2c5af06976f58d43d861220292abadadf1d6ebcaa377bcd6d02a194c68782. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA029500091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d250168b3696e5ef40dfa03307d46b5ea362d6d24b77ffacc7b8822404683bb. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA029500159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641f1bdd3977c3ee3c837f659b4eab8b36f627d831f7cfde09d99446034f93ca. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:28:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA029500161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e1b54a745161a2991cfe44778fa3b5520fe2e784fa41199eb44949c77499e5. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:31:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020200146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00758a8a1fd870c4bd4b20263717343e3b8a133b012d90b509375814ab39c1d. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:53:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020200150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5dd2eb792f47dbed043d2a6a4664e60b474ff16f10e444a169d058dd225817. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:38:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020200141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7144a58503ddb1842e23560ff990d0777ab273393424c15481a3e3453b2948b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020200144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa853b36ac173f4daaeb4e07ccde87bb446c43817c91ecc1accda15afa0053ac0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020200143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8c3adda2de590784b74c2a58c9b08c27c52319605f17f01b0e710490c10fb4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020200145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376b3bebde5d2edf83b1f18a531a8dd91ba85f8c6f772589a9407fe3eeea713a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020200142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c413e34837668c4a44ac32c0274484b59fb2405bb2027d5549818d3526c483a. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:26:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020900158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68fa6c17072c86284d5cd98d76c98ae75cfeefbcaf18282d7794a50ca6257a4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020900161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e29316ab40c7381c8f0bb5aab945af0674d08311beebe22b905c495dd27360. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:45:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020900162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ea17cbb94ab018d2cec999bd8caac93c23f3202971507073cd6db2f975216d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020900163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b9f08b05ff542f48379359e6e8b047b9f8b9c8f4fe2dda580ddc8f70ff1aba. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020900164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884684a2b20bb46b97b602b78a445c9b74a37aed872a66f568470d29ebc47511. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:38:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020700573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2709410c0c587d9c100d61b05c73b3304451f344c5037b738778c98015d99e80. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020700574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7c5913bd0cff2be9dc67b867e732c1a77bb51c3d672012a2099e1f0514f48f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020700575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c09cc1a61a2d965fa758858f101bc15513a261c1fe0b0d69a273b58afece91. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:30:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020700577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251b59f368dab8e9e43faa98b9a23a6c3b15fa73381120a9109f264217a1610a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020700578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2448c32561f045209c9d4182e24d66cd80a422963e4cee87a24c43cee4fecc80. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020700579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8129b8d710d4a7464b4cce3af6a3a263997528d4fd07d153d93ca2377d13c9bb. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020700580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8fa8c3e67d62e7743df8b9efe3fdbc5d44dbbc50ca557212c570e62d2b7d97. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:21:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAA020700581.